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dybincka [34]
3 years ago
9

A hot air balloon is currently at a height of 900 feet. The balloon is descending by 10 feet minute. Find a function for the bal

loon's height after x minutes
Mathematics
1 answer:
mylen [45]3 years ago
8 0

Answer:

y=-10x+900

Step-by-step explanation:

Let

x -----> the number of minutes

y ----> the balloon's height in feet

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-coordinate of the y-intercept

In this problem we have that

The slope is equal to

m=-10\ \frac{ft}{min} ----> is negative because is a decreasing function

b=900\ ft

Remember that the y-intercept is the value of y when the value of x is equal to zero

In this context the y-intercept is the height of the balloon when the time is equal to zero (initial height)

substitute

y=-10x+900

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